ae ,¢ t 4 Gr To fe and inthe over-all nucleur testing program for future tests, was the establishment within the Special Weapons Center of the position of Deputy Commander for Overseas Tests. Colonel William B. Kieffer, who was relieved of duty as Special Weapons Center Deputy Commander, was assigned to the previously unfilled position on 15 July 1957. 15 This position was designed to provide for Colonel Kieffer, and for those officers who would later occuvy the space, a period of orientation und observation preparatory to assumption of command of Task Croup 7.4 upon its activation. The new commander of Task Group 7.4 would automatically assume the command of the 4950th Test Gro.p (thiclear). B. OPERATIONS During the RRDWING/HARDT’.CK interim planning period, the Operations Directorate was enga-ed in the conduct of air support for Operation PLUMBBOBR at the Nevada Test Site, ‘Several HARDIACK planning actions were accomplished, however, Planning Schedule. The Joint Task Force SEVEN tentative planning schedule for HARDTACK was published on 27 November 1956,2° The cover letter to the schedule advised that, because of a lack of firm information, the schedule wes based upon the assumption (1) that the scope of HARDTAGK would be :irilar to bui vreater than that of Opereiion ReNWING and (2) taout he first detonation of Oner.tion HAR.WACK wold cecur on 1 vay 1953, A AFWL/ HQ > apa:

Select target paragraph3